Sure, Apple provides a nice mechanism to collect crash reports through iTunes
Connect. But it takes a while for the reports to show up. Sometimes you want to
know right now how your app is doing in the wild.

QuincyKit looks like a neat entry in the real time crash reporting
game. It works client side on both iOS and OS X and comes with a PHP server
component that you set up yourself. It’s got metrics, comments, and what looks
like simple issue management. Users can provide additional feedback along with
the crash report as it’s sent. That alone makes this invaluable. It’s one of
the biggest weaknesses of Apple’s anonymous crash report mechanism. Sometimes
you just want to ask, “What were you doing when you met that nasty bug?”

I’ll be looking into this myself. It’s released under the MIT open source
license.